{"draft":"draft-ietf-pce-disco-proto-isis-08","doc_id":"RFC5089","title":"IS-IS Protocol Extensions for Path Computation Element (PCE) Discovery","authors":["JL. Le Roux, Ed.","JP. Vasseur, Ed.","Y. Ikejiri","R. Zhang"],"format":["ASCII","HTML"],"page_count":"17","pub_status":"PROPOSED STANDARD","status":"PROPOSED STANDARD","source":"Path Computation Element","abstract":"There are various circumstances where it is highly desirable for a\r\nPath Computation Client (PCC) to be able to dynamically and\r\nautomatically discover a set of Path Computation Elements (PCEs),\r\nalong with information that can be used by the PCC for PCE selection.\r\nWhen the PCE is a Label Switching Router (LSR) participating in the\r\nInterior Gateway Protocol (IGP), or even a server participating\r\npassively in the IGP, a simple and efficient way to announce PCEs\r\nconsists of using IGP flooding.  For that purpose, this document\r\ndefines extensions to the Intermediate System to Intermediate System\r\n(IS-IS) routing protocol for the advertisement of PCE Discovery\r\ninformation within an IS-IS area or within the entire IS-IS routing\r\ndomain.  [STANDARDS-TRACK]","pub_date":"January 2008","keywords":["[--------|p]","path computation client","pcc","intermediate system to intermediate system"],"obsoletes":[],"obsoleted_by":[],"updates":[],"updated_by":["RFC9353"],"see_also":[],"doi":"10.17487\/RFC5089","errata_url":"https:\/\/www.rfc-editor.org\/errata\/rfc5089"}